CVE-2020-6851

medium
Published — · Modified —
CVSS v3
CVSS v2
VIR risk
5.5

Description

OpenJPEG through 2.3.1 has a heap-based buffer overflow in opj_t1_clbl_decode_processor in openjp2/t1.c because of lack of opj_j2k_update_image_dimensions validation.

Predictions

Exploit likelihood
20%
Patch ETA

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2020-6851

vendor Authored 2026-05-27

Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2020-6851.html

vendor Authored 2026-05-27

Vendor advisory: arch — https://security.archlinux.org/ASA-202012-21

OS impact

OSVersionStatusFixed in
arch archfixed2.4.0-1
suse slesaffected
debian debianbookwormfixed2.4.0-1
debian debianbullseyefixed2.4.0-1
debian debianforkyfixed2.4.0-1
debian debiansidfixed2.4.0-1
debian debiantrixiefixed2.4.0-1

References

Verify integrity in audit chain (admin only). AS-IS.